Thumb turn actuator



FIG. 1 is a perspective view a thumb turn actuator showing my new design.

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is rear view thereof;

FIG. 6 is a right view thereof; and,

FIG. 7 is a left view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a thumb turn actuator, as shown and described. 